<div class="row height">
    <div class="col-3">
        <div class="btn-group btn-group-vertical nav flex-column nav-pills" role="group" aria-label="Basic example" aria-orientation="vertical">
            <button type="button" class="btn btn-secondary" aria-selected="true" [routerLink]="['user']">用户管理</button>
            <button type="button" class="btn btn-secondary" aria-selected="false" [routerLink]="['product']">产品管理</button>
            <button type="button" class="btn btn-secondary" aria-selected="false" [routerLink]="['echart']">Echart</button>
            <button type="button" class="btn btn-secondary" aria-selected="false" [routerLink]="['exit']">退出</button>
        </div>
    </div>
    <div class="col-9">
        <div>
            <router-outlet></router-outlet>
        </div>
    </div>
</div>